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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Purpose: PCI Express Port Bus Driver's Internal Data Structures4 *5 * Copyright (C) 2004 Intel6 * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)7 */8 9#ifndef _PORTDRV_H_10#define _PORTDRV_H_11 12#include <linux/compiler.h>13 14/* Service Type */15#define PCIE_PORT_SERVICE_PME_SHIFT 0 /* Power Management Event */16#define PCIE_PORT_SERVICE_PME (1 << PCIE_PORT_SERVICE_PME_SHIFT)17#define PCIE_PORT_SERVICE_AER_SHIFT 1 /* Advanced Error Reporting */18#define PCIE_PORT_SERVICE_AER (1 << PCIE_PORT_SERVICE_AER_SHIFT)19#define PCIE_PORT_SERVICE_HP_SHIFT 2 /* Native Hotplug */20#define PCIE_PORT_SERVICE_HP (1 << PCIE_PORT_SERVICE_HP_SHIFT)21#define PCIE_PORT_SERVICE_DPC_SHIFT 3 /* Downstream Port Containment */22#define PCIE_PORT_SERVICE_DPC (1 << PCIE_PORT_SERVICE_DPC_SHIFT)23#define PCIE_PORT_SERVICE_BWNOTIF_SHIFT 4 /* Bandwidth notification */24#define PCIE_PORT_SERVICE_BWNOTIF (1 << PCIE_PORT_SERVICE_BWNOTIF_SHIFT)25 26#define PCIE_PORT_DEVICE_MAXSERVICES 527 28extern bool pcie_ports_dpc_native;29 30#ifdef CONFIG_PCIEAER31int pcie_aer_init(void);32#else33static inline int pcie_aer_init(void) { return 0; }34#endif35 36#ifdef CONFIG_HOTPLUG_PCI_PCIE37int pcie_hp_init(void);38#else39static inline int pcie_hp_init(void) { return 0; }40#endif41 42#ifdef CONFIG_PCIE_PME43int pcie_pme_init(void);44#else45static inline int pcie_pme_init(void) { return 0; }46#endif47 48#ifdef CONFIG_PCIE_DPC49int pcie_dpc_init(void);50#else51static inline int pcie_dpc_init(void) { return 0; }52#endif53 54/* Port Type */55#define PCIE_ANY_PORT (~0)56 57struct pcie_device {58 int irq; /* Service IRQ/MSI/MSI-X Vector */59 struct pci_dev *port; /* Root/Upstream/Downstream Port */60 u32 service; /* Port service this device represents */61 void *priv_data; /* Service Private Data */62 struct device device; /* Generic Device Interface */63};64#define to_pcie_device(d) container_of(d, struct pcie_device, device)65 66static inline void set_service_data(struct pcie_device *dev, void *data)67{68 dev->priv_data = data;69}70 71static inline void *get_service_data(struct pcie_device *dev)72{73 return dev->priv_data;74}75 76struct pcie_port_service_driver {77 const char *name;78 int (*probe)(struct pcie_device *dev);79 void (*remove)(struct pcie_device *dev);80 int (*suspend)(struct pcie_device *dev);81 int (*resume_noirq)(struct pcie_device *dev);82 int (*resume)(struct pcie_device *dev);83 int (*runtime_suspend)(struct pcie_device *dev);84 int (*runtime_resume)(struct pcie_device *dev);85 86 int (*slot_reset)(struct pcie_device *dev);87 88 int port_type; /* Type of the port this driver can handle */89 u32 service; /* Port service this device represents */90 91 struct device_driver driver;92};93#define to_service_driver(d) \94 container_of(d, struct pcie_port_service_driver, driver)95 96int pcie_port_service_register(struct pcie_port_service_driver *new);97void pcie_port_service_unregister(struct pcie_port_service_driver *new);98 99extern const struct bus_type pcie_port_bus_type;100 101struct pci_dev;102 103#ifdef CONFIG_PCIE_PME104extern bool pcie_pme_msi_disabled;105 106static inline void pcie_pme_disable_msi(void)107{108 pcie_pme_msi_disabled = true;109}110 111static inline bool pcie_pme_no_msi(void)112{113 return pcie_pme_msi_disabled;114}115 116void pcie_pme_interrupt_enable(struct pci_dev *dev, bool enable);117#else /* !CONFIG_PCIE_PME */118static inline void pcie_pme_disable_msi(void) {}119static inline bool pcie_pme_no_msi(void) { return false; }120static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {}121#endif /* !CONFIG_PCIE_PME */122 123struct device *pcie_port_find_device(struct pci_dev *dev, u32 service);124#endif /* _PORTDRV_H_ */125